Spark-arrester



UNTTED sTATEs PATENT orFrcE.

DAVID MATTHEW, 0F PHILADELPHIA, PENNSYLVANIA.

SPARK-ARRESTER.

Specification of Letters Patent No. 12,915, dated May 22, 1855.

To all whom it may concern Be it known that I, DAVID MATTHEW, of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Spark-Arresters for Locomotive- Engines, and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in constructing a head or cone that will separate the sparks from the current instead of deflecting them olil with the current.

The manner which I construct my head or cone is to make it of cast iron round, square, or oblong with the surface that is to be presented to the chimney formed of V cavities or V projections forming entrances to the openings which are at the upper points of the V cavities or V projections having a plate of iron over the top to close the top. The lo-w part of the round head or cone sits in saddle pipe K, which receives the sparks and conducts them off this saddle pipe having flanges on each end is riveted to the chimney pipe or spark arrester as in Figures 1 and 2, and supports the head or cone by a bolt passing up through its middle the square or oblong head has the outer points co-ming down lower than the middle and,has flanges cast on it that are 'riveted or bolted to the chimney and supports it and forms on its inside conductors on each side by the inclined ends with the chimney cut away to allow, the passage of the sparks. The ends are shut up all but about 3 to 4 square inches, for the passage of the sparks at the lower points.

In the accompanying drawings, Fig. l, A, is, a vertical section of separating head or cone; K, the saddle pipe N, spark arrester; O, case and P, chimney; m, m, the openings.

Fig. 2, B, is vertical section separating head or cone, K, saddle pipe supporting the head B, with the bolt L, securing the whole v with the flanges, K, riveted to chimney P,

head C, and section of case, O, and chimneyV P, showing the narrow way of the case, O, the case being oval. m, m, are the openings for to discharge the sparks.

Fig. 5, A, is a view of bottom separating head or cone, removed. m, m, show the openings at m, m, center opening, R.

.Fig 6, H, is a bottom vie/w of separating head removed with the cavities and o-penings m, m, made o-n an increased curvefrom. the center to the periphery to produce a rotary motion to the current thrown off in case.

Fig. 7, C, is a bottom view of separating head removed, `for an oval case; m, m, the openings.

Fig. 8, I is view of top plate of C.

Fig. 9, K, is top view of part of saddle pipe removed; K and R, openings to receive the separating head or cone.

Like letters in the different ligures refer to like parts. p

The manner it operates when the current of smoke, steam, gases and sparks are thrown againt it by the force of the exhaust stealn in the chimney and strikes into the V cavities the sparks pass through the openings at the top of these V cavities striking the top plate and falling back into the cavities on the inside which conducts them down while the current smoke gases pass ofi".

Having thus fully described my invention and the manner in which it operates what I claim isl. The separating head or cone having the surface that is exposed to the current from the chimney formed of V cavities or projections and openings for the purpose of separating the sparks from ythe current of gases. l

2. I, also claim the saddle pipe for the purpose of supporting the head and conducting the current of sparks and gases through it, substantially as herein shown and described.

DAVID MATTHEW. Witnesses:

JNO. B. KENNEY, R. PHiLLIP. 

